For information on converting to InterSystems IRIS,
see the InterSystems IRIS Adoption Guide
and the InterSystems IRIS In-Place Conversion Guide,
both available on the WRC Distributions page (login required).
property ContentStreamClassname as %String [ InitialExpression = "*%Stream.GlobalCharacter" ];
In your Service's OnInit() method, set this property to the name of a class you would like to receive as the Stream property of the pInput Message argument to your OnProcessInput method.
If this value is empty or begins with a * character then the Body string property will be used unless the input is too long for the system maximum string size.
If this value is empty or *, the class "%Stream.GlobalCharacter" will be used if the input is too long.